Devicenet; Introduction; Communication Set-Up - Omron TJ1-MC04 - PROGRAMMING 1 Programming Manual

Communication protocols
4.5

DeviceNet

4.5.1

Introduction

DeviceNet is an international open fieldbus standard based on the
CAN protocol. The TJ1-DRT enables the Trajexia system to
communicate to a DeviceNet network. It exchanges data between a
DeviceNet master and the TJ1-MC__. For this, it uses the Trajexia
VR variables.
4.5.2

Communication set-up

The TJ1-DRT has two node number selectors. You can use the
node number selectors to assign a node number to the TJ1-DRT.
The DeviceNet node numbers range from 0 to 63. If you select a
node number with the node number selectors that exceeds this
range, you will select the node number that is set by software. The
nodes that enable software setting are 64 to 99.
To initialise the TJ1-DRT, use the BASIC DEVICENET command:
DEVICENET(unit_number, 2, 1, output_start, output_count,
input_start, input_count)
where:
• unit_number is the number of the TJ1-DRT unit.
• output_start is the start address of the output data range of VR
variables.
• output_count is the number of VR variables in the output data
range.
• input_start is the start address of the input data range of VR
variables.
• input_count is the number of VR variables in the input data
range.
PROGRAMMING MANUAL 173